DescriptionSEM images of non-traditional oil and as resrvoir sandstone, with low electrical resistance. Ukraine, Dnipro-Donets Depression.png
English: left image - electron emission mode; magnification 1500;
right image - reflected electrones mode; magnification 1500
English: The piryte grains in non-traditional oil and as resrvoir rocks with low electrical resistance. Polymictic fine layered sandstone with clay and sulfate-carbonate cement. Ukraine, Dnipro-Donets Depression, terrigenous coal-bearing medley colored formation of Upper Carbon
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